darkcomet | 391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 12:50

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General

Target

391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe
Size

3.9MB
MD5

c7c4cc2b364571c3a9754faa5b502ece
SHA1

46b5acbf8b1a4b516a154f12a7abe9cf8888a531
SHA256

391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968
SHA512

85b0a63ae675ddb721db7609655151e29341d0e4d37697468f8b3e70c8445b977fdd7cd982c51518f265e59e169fc077cb7da4006f2c78f9ab7aa47af04f3b67
SSDEEP

98304:alX3KMj7yBNUVPhd5G0Z5DxdM3hZpmBAlB6D4tyX6kuT4IkQApCgvms0Cv05J5C4:alX3KMj7yBNUVPhd5G0Z5DxdM3hZpmB4

Score

10^/10

darkcomet discovery persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Soundcrd.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Soundcrd.exe

Executes dropped EXE 3 IoCs

Processes:

Soundcrd.exeSoundcrd.exeSoundcrd.exe

pid	Process
2912	Soundcrd.exe
2888	Soundcrd.exe
2692	Soundcrd.exe

Loads dropped DLL 7 IoCs

Processes:

391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exeSoundcrd.exe

pid	Process
2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe
2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe
2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe
2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe
2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe
2912	Soundcrd.exe
2912	Soundcrd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcrosoftt = "C:\\Users\\Admin\\AppData\\Roaming\\Soundcrd.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Soundcrd.exe

description	pid	Process	procid_target
PID 2912 set thread context of 2888	2912	Soundcrd.exe	35
PID 2912 set thread context of 2692	2912	Soundcrd.exe	36

UPX packed file 24 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2132-2-0x0000000000400000-0x00000000007EC000-memory.dmp	upx
behavioral1/files/0x0009000000016c4e-27.dat	upx
behavioral1/memory/2888-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2132-47-0x0000000000400000-0x00000000007EC000-memory.dmp	upx
behavioral1/memory/2888-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2692-65-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2692-67-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2912-70-0x0000000000400000-0x00000000007EC000-memory.dmp	upx
behavioral1/memory/2692-69-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2692-68-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2888-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2692-75-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2888-78-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-82-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-86-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-90-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2888-94-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.execmd.exereg.exeSoundcrd.exeSoundcrd.exeSoundcrd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Soundcrd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	Soundcrd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

Soundcrd.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	Soundcrd.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

Soundcrd.exeSoundcrd.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2888	Soundcrd.exe
Token: SeSecurityPrivilege	2888	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2888	Soundcrd.exe
Token: SeLoadDriverPrivilege	2888	Soundcrd.exe
Token: SeSystemProfilePrivilege	2888	Soundcrd.exe
Token: SeSystemtimePrivilege	2888	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2888	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2888	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2888	Soundcrd.exe
Token: SeBackupPrivilege	2888	Soundcrd.exe
Token: SeRestorePrivilege	2888	Soundcrd.exe
Token: SeShutdownPrivilege	2888	Soundcrd.exe
Token: SeDebugPrivilege	2888	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2888	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2888	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2888	Soundcrd.exe
Token: SeUndockPrivilege	2888	Soundcrd.exe
Token: SeManageVolumePrivilege	2888	Soundcrd.exe
Token: SeImpersonatePrivilege	2888	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2888	Soundcrd.exe
Token: 33	2888	Soundcrd.exe
Token: 34	2888	Soundcrd.exe
Token: 35	2888	Soundcrd.exe
Token: SeDebugPrivilege	2692	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exeSoundcrd.exeSoundcrd.exe

pid	Process
2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe
2912	Soundcrd.exe
2692	Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.execmd.exeSoundcrd.exe

description	pid	Process	procid_target
PID 2132 wrote to memory of 1816	2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe	31
PID 2132 wrote to memory of 1816	2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe	31
PID 2132 wrote to memory of 1816	2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe	31
PID 2132 wrote to memory of 1816	2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe	31
PID 1816 wrote to memory of 2716	1816	cmd.exe	33
PID 1816 wrote to memory of 2716	1816	cmd.exe	33
PID 1816 wrote to memory of 2716	1816	cmd.exe	33
PID 1816 wrote to memory of 2716	1816	cmd.exe	33
PID 2132 wrote to memory of 2912	2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe	34
PID 2132 wrote to memory of 2912	2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe	34
PID 2132 wrote to memory of 2912	2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe	34
PID 2132 wrote to memory of 2912	2132	391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe	34
PID 2912 wrote to memory of 2888	2912	Soundcrd.exe	35
PID 2912 wrote to memory of 2888	2912	Soundcrd.exe	35
PID 2912 wrote to memory of 2888	2912	Soundcrd.exe	35
PID 2912 wrote to memory of 2888	2912	Soundcrd.exe	35
PID 2912 wrote to memory of 2888	2912	Soundcrd.exe	35
PID 2912 wrote to memory of 2888	2912	Soundcrd.exe	35
PID 2912 wrote to memory of 2888	2912	Soundcrd.exe	35
PID 2912 wrote to memory of 2888	2912	Soundcrd.exe	35
PID 2912 wrote to memory of 2888	2912	Soundcrd.exe	35
PID 2912 wrote to memory of 2692	2912	Soundcrd.exe	36
PID 2912 wrote to memory of 2692	2912	Soundcrd.exe	36
PID 2912 wrote to memory of 2692	2912	Soundcrd.exe	36
PID 2912 wrote to memory of 2692	2912	Soundcrd.exe	36
PID 2912 wrote to memory of 2692	2912	Soundcrd.exe	36
PID 2912 wrote to memory of 2692	2912	Soundcrd.exe	36
PID 2912 wrote to memory of 2692	2912	Soundcrd.exe	36
PID 2912 wrote to memory of 2692	2912	Soundcrd.exe	36
PID 2912 wrote to memory of 2692	2912	Soundcrd.exe	36

C:\Users\Admin\AppData\Local\Temp\391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe
"C:\Users\Admin\AppData\Local\Temp\391d9cd933d7cbc8cf2a4651f99c77c6310d4eb5c3f1177ceed0d5c536eba968.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2132
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\pmPtx.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1816
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoftt" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Soundcrd.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2716
- C:\Users\Admin\AppData\Roaming\Soundcrd.exe
  "C:\Users\Admin\AppData\Roaming\Soundcrd.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2912
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:2888
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\pmPtx.bat

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

Download Submit
C:\Users\Admin\AppData\Roaming\Soundcrd.exe

Filesize
3.9MB

MD5
118ae396a2354969012b528e2a5546e7

SHA1
4790acb6a0ae61bd21876baccef31474a84c5f8f

SHA256
a95eba5cfbcd37700481f956c9d4b1eef44d49e803c36bfc37f9b4be017fa59c

SHA512
fccbb5f51cc4a065b9050138e0a217e5e2dc00dc3379d2dfedb2ad4c7a2cc88505a6f638bd4d2b4f1fc1d0f299cb196656553aebca26fa36aab7ca033886e0ee

Download Submit
memory/2132-42-0x00000000039F0000-0x0000000003DDC000-memory.dmp

Filesize
3.9MB

Download
memory/2132-43-0x00000000039F0000-0x0000000003DDC000-memory.dmp

Filesize
3.9MB

Download
memory/2132-44-0x00000000039F0000-0x0000000003DDC000-memory.dmp

Filesize
3.9MB

Download
memory/2132-45-0x00000000039F0000-0x0000000003DDC000-memory.dmp

Filesize
3.9MB

Download
memory/2132-2-0x0000000000400000-0x00000000007EC000-memory.dmp

Filesize
3.9MB

Download
memory/2132-47-0x0000000000400000-0x00000000007EC000-memory.dmp

Filesize
3.9MB

Download
memory/2692-68-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2692-65-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2692-67-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2692-69-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2692-75-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2888-63-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-61-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-60-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-94-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-59-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-90-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-64-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-86-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-78-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2888-82-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2912-52-0x0000000002B40000-0x0000000002F2C000-memory.dmp

Filesize
3.9MB

Download
memory/2912-70-0x0000000000400000-0x00000000007EC000-memory.dmp

Filesize
3.9MB

Download
memory/2912-58-0x0000000002C40000-0x000000000302C000-memory.dmp

Filesize
3.9MB

Download